Answer:
usbksnkwojeybnakusbmsonsnllonsybks maobsji ..isbksobsniysnwk9mnsubsnnkiaba inahjans ishksksubs iga6kakoav oaujskoa oshkaous oao8nahks phnaian. isynkalubs ouanamlsubsla usvkslisns kaibsmsobsusbkiagnsoyns ia7hkw0me7a ushkoia isjhajskybs ihebsjjs7ja iushsjka7hanla
Step-by-step explanation:
somnkeunmaonuhbsib m isbniakks jjshkwhbsj iksne
ajbsubks8 laibsyjs obsujbsk isgis8j s osjins kksuusb kbsuajoao. kwunkaohw iwhjnwkbjsjsjkwjnao oshjsklsuns
Answer:
D
Step-by-step explanation:
We want to find:
Distribute:
Distribute:
Rearrange:
Combine like terms:
The answer is D.
Each of these roots can be expressed as a binomial:
(x+1)=0, which solves to -1
(x-3)=0, which solves to 3
(x-3i)=0 which solves to 3i
(x+3i)=0, which solves to -3i
There are four roots, so our final equation will have x^4 as the least degree
Multiply them together. I'll multiply the i binomials first:
(x-3i)(x+3i) = x²+3ix-3ix-9i²
x²-9i²
x²+9 [since i²=-1]
Now I'll multiply the first two binomials together:
(x+1)(x-3) = x²-3x+x-3
x²-2x-3
Lastly, we'll multiply the two derived terms together:
(x²+9)(x²-2x-3) [from the binomial, I'll distribute the first term, then the second term, and I'll stack them so we can simply add like terms together]
x^4 -2x³-3x²
<u> +9x²-18x-27</u>
x^4-2x³+6x²-18x-27
After the first day, 1/3 of the original amount remained:
... (1/3)·45 = 15
After the second day, 2/3 of that amount remained:
... (2/3)·15 = 10
The bookstore has 10 copies left.
The probability that the letters CO remain next to each other (in order) as a unit is 
.
<h3>
What is probability?</h3>
The area of mathematics known as probability deals with numerical representations of the likelihood that an event will occur or that a statement is true. An event's probability is a number between 0 and 1, where, roughly speaking, 0 denotes the event's impossibility and 1 denotes certainty. It is more likely that an event will occur if its probability is higher.
When the letters are arranged randomly in a row, the total number of arrangements is 40,320 , and the number of arrangements with the letters CO next to each other (in order) as a unit is 5,040.
Therefore, possible outcomes = 5040 and
Total outcomes = 40320
Probability = 
p = 
Therefore, the probability that the letters CO remain next to each other (in order) as a unit is .
To learn more about probability with the given link
brainly.com/question/11234923
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